A proton orbits a 1.0-cm-diameter metal ball 1.30 mm above t
A proton orbits a 1.0-cm-diameter metal ball 1.30 mm above t
英语翻译a 6-cm-diameter metal cylindrical scatterer in free spac
a isn't ball it
英语翻译Cut a 40mm diameter hole in the hull at each anode locat
英语翻译A stop 8mm in diameter is placed halfway between an exte
英语单词练习1条D__ means short bar with a metal ball at each end,us
7.As shown above,a ball of mass m,suspended on the end of a
I don't have a soccer ball.
If a cubic inch of a metal weighs 2 pounds,a cubic foot of t
if a proton has a relative mass of 1 unit and a relative cha
You should give him a t() to a ball game
Lucy doesn't have a tennis ball 改为肯定句Lucy ( ) a tennis ball